5/3/1 Calculator: Generate Your Full Cycle From Your Maxes

5/3/1 Calculator

Most “5/3/1 calculators” hand you a single set of percentages and leave you to do the rest. This one builds your entire three-week cycle for all four lifts at once — every working set, every percentage, every rep target — straight from your training max. Enter your numbers, hit generate, and take the table to the gym.

If you only know your one-rep max, switch the first dropdown to One-Rep Max and the calculator derives a proper training max for you first.

How the 5/3/1 Calculator Works

5/3/1 runs on a fixed percentage structure tied to your training max (TM) — a deliberately submaximal number, usually 85–90% of your true 1RM. Every working weight is a percentage of that TM, and the percentages wave across three weeks:

Here is the full prescription the calculator applies to your training max:

The + on the third set of each week is the AMRAP set — As Many Reps As Possible. It’s where you set rep records and gauge whether your training max is dialed in.

Training Max vs. One-Rep Max

The single most common 5/3/1 mistake is plugging your true max into the calculator as your training max. Don’t. Your training max is intentionally lower so that you always have room to push the AMRAP set and keep your technique clean.

If you tested or estimated a 1RM, set the calculator to One-Rep Max mode and choose your TM percentage:

• 85% — Wendler’s current default. More reps on your AMRAP sets, more sustainable cycles. Start here if you’re unsure.
• 90% — The original prescription. Heavier top sets for lifters who don’t push AMRAP sets hard.

Not sure where your 1RM sits? Use the estimated 1RM calculator to derive it from any recent set, then come back here.

After the Cycle: Progressing Your Training Max

When the three weeks are done, you increase your training max and run it again:

• +5 lb to upper-body lifts (bench, overhead press)
• +10 lb to lower-body lifts (squat, deadlift)

That steady, almost-boring progression is the entire point of 5/3/1. Over a year it adds up to roughly 60 lb on your pressing maxes and 120 lb on your squat and deadlift maxes — without grinding. When your AMRAP reps start dropping, it’s time to reset your training max.

What This Calculator Doesn’t Do (And Why That Matters)

This tool generates your main work — the warm-ups and three working sets that form the backbone of every 5/3/1 session. That’s the part of the program that’s fixed and identical for everyone.

What it can’t decide for you is everything after the main work:

• Which supplemental template to run — Boring But Big, FSL, or SSL
• Which accessories fit your weak points and equipment
• When your AMRAP trend says you should reset instead of progress

Those decisions are what separate a lifter who runs 5/3/1 from a lifter who spreadsheets 5/3/1. Train531 generates your main work automatically — the same proven percentages as the table above — then its AI coach prescribes your supplemental and accessory work from your training history and flags a training-max reset before your reps fall off. The numbers are the easy part. The app handles the rest.